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Subaru WRX STi (2010-2010) running costs and reliability

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Running costs rating: 3 out of 53.0

Written by Simon McBride Published: 6 June 2019

Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.

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Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 26 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.

View mpg & specs for any version

Subaru dealers are not the most expensive when it comes to servicing, which at least helps with the maintenance side of Subaru WRX STi running costs. Fuel consumption is another matter, though: put your foot down and you will not get anywhere near the manufacturer’s claimed 26.9mpg on the combined cycle.

It pollutes more nasties from the exhaust than an eco warrior would like. In terms of CO2, Subaru WRX STi emissions are 243g/km which puts it towards the top of the VED tax band system for road tax.

Subaru has fared well in reliability surveys so you should expect trouble-free motoring. The engine is Euro 5 compliant but it’s an incarnation of the unit previously used. It is renowned for its durability so Subaru WRX STi reliability problems should be few and far between. The cabin feels a little on the cheap side when compared with rivals so the jury’s out on how well it will last.